BTRFS warning (device loop1): failed to read fs tree: -5 Unable to handle kernel paging request at virtual address fcff9fffe0001824 KASAN: maybe wild-memory-access in range [0xe800ffff0000c120-0xe800ffff0000c127] Mem abort info: ESR = 0x0000000096000004 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x04: level 0 translation fault Data abort info: ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000 CM = 0, WnR = 0, TnD = 0, TagAccess = 0 GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [fcff9fffe0001824] address between user and kernel address ranges Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP Modules linked in: CPU: 0 UID: 0 PID: 6663 Comm: syz.1.40 Not tainted 6.12.0-syzkaller-g7b1d1d4cfac0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 pstate: 804000c5 (Nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __lock_acquire+0xfc/0x77c8 kernel/locking/lockdep.c:5065 lr : lock_acquire+0x240/0x728 kernel/locking/lockdep.c:5825 sp : ffff8000a20770c0 x29: ffff8000a2077380 x28: ffff80008025d2e8 x27: 0000000000000000 x26: ffff0001b361c4c0 x25: 0000000000000000 x24: 0000000000000001 x23: 0000000000000000 x22: 1ffff00011f1a0bc x21: e800ffff0000c120 x20: 0000000000000001 x19: 0000000000000000 x18: 1fffe000366c3876 x17: ffff80008f8cd000 x16: ffff8000831615b0 x15: 0000000000000001 x14: ffff80008f8d05e8 x13: dfff800000000000 x12: ffff70001440ee40 x11: ffff800080359554 x10: ffff80008f8d05e4 x9 : 00000000000000f3 x8 : 1d001fffe0001824 x7 : ffff80008025d2e8 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 0000000000000000 x0 : e800ffff0000c120 Call trace: __lock_acquire+0xfc/0x77c8 kernel/locking/lockdep.c:5065 (P) lock_acquire+0x240/0x728 kernel/locking/lockdep.c:5825 (L) lock_acquire+0x240/0x728 kernel/locking/lockdep.c:5825 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline] _raw_spin_lock_irq+0x58/0x70 kernel/locking/spinlock.c:170 put_pwq_unlocked kernel/workqueue.c:1662 [inline] destroy_workqueue+0x8d8/0xdc0 kernel/workqueue.c:5883 btrfs_destroy_workqueue+0x48/0x308 fs/btrfs/async-thread.c:360 btrfs_stop_all_workers+0x184/0x240 fs/btrfs/disk-io.c:1791 open_ctree+0xe9c/0x21d8 fs/btrfs/disk-io.c:3605 btrfs_fill_super fs/btrfs/super.c:974 [inline] btrfs_get_tree_super fs/btrfs/super.c:1896 [inline] btrfs_get_tree+0xe34/0x131c fs/btrfs/super.c:2107 vfs_get_tree+0x90/0x28c fs/super.c:1814 fc_mount+0x24/0xac fs/namespace.c:1231 btrfs_get_tree_subvol fs/btrfs/super.c:2070 [inline] btrfs_get_tree+0x4c4/0x131c fs/btrfs/super.c:2108 vfs_get_tree+0x90/0x28c fs/super.c:1814 do_new_mount+0x278/0x900 fs/namespace.c:3507 path_mount+0x590/0xe04 fs/namespace.c:3834 do_mount fs/namespace.c:3847 [inline] __do_sys_mount fs/namespace.c:4057 [inline] __se_sys_mount fs/namespace.c:4034 [inline] __arm64_sys_mount+0x4d4/0x5ac fs/namespace.c:4034 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 Code: f007aba8 b945e508 34008c88 d343fea8 (386d6908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: f007aba8 adrp x8, 0xf577000 4: b945e508 ldr w8, [x8, #1508] 8: 34008c88 cbz w8, 0x1198 c: d343fea8 lsr x8, x21, #3 * 10: 386d6908 ldrb w8, [x8, x13] <-- trapping instruction